The Al-Mukmin Islamic boarding school also known as Pesantren Al-Mukmin and Pondok Ngruki, is a pesantren ('Islamic boarding school') located in Ngruki, a suburb in the regency of Sukoharjo, Central Java, Indonesia.
It was founded 1972 by the alleged 'spiritual head' of Jemaah Islamiyah, Abu Bakar Bashir, and by Abdullah Sungkar.
Al-Mukmin's activities were initially limited to religious discussion after dhuhr (midday prayer).
Following increasing interest, the founders expanded Al-Mukmin into a madrasah ('Islamic school') and then into a pesantren.
[3] Pictures of AK47s are hung in hallways, and a sign above a classroom reads:[4] "Death in the way of Allah is our highest aspiration.